If you feel like you have buildup from conditioner, styling products etc. then use a clarifying shampoo every few washes like Suave Daily Clarifying which is what $1.29 & works excellent.
Your hair sounds similar to mine I use Neutrogena Triple Moisture Cream Lather Shampoo. I also use the Suave Clarifying shampoo every few washes to help with residue.
I have never been able to find a shampoo that does what it is suppose to do to it. Though I did get this "Straight" stuff in a purple bottle that worked really nice. But now I want something that gives my hair more volume. I am currently using herbal essences volume shampoo
For some reason my hair doesn't take well to Aussie products. I have tried them in the past and my hair doesn't like it. I love Redkin all soft.. but I already have it in my shower. I want to try Brillant Brunette next.